<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>
<body>
    <div id="app">
        <input type="text" v-model="search"/>
        <ul>
            <li v-for="item in newPerson" :key="item.id">
                {{item.name}}--{{item.age}}
            </li>
        </ul>
    </div>
    <script>
        const vm = new Vue({
            el:'#app',
            data(){
                return{
                    search:'',
                    person: [
                        { id: "001", name: "laowang", age: 18 },
                        { id: "002", name: "xiaowang", age: 12 },
                        { id: "003", name: "dawang", age: 33 },
                        { id: "004", name: "xiaohuang", age: 6 },
                    ],
                    newPerson:[]  
                }
            },
            watch:{
                search:{
                    immediate:true , //立即监听
                    handler(newValue){
                        this.newPerson =this.person.filter((item)=>{
                            return item.name.includes(newValue)
                        })
                    }
                }
            }
        })
    </script>
</body>
</html>